题目内容
--- Will Joe attend the party?
--- If his wife won’t go to the party,_________
- A.he will either
- B.neither does he
- C.he neither will
- D.neither will he
考查倒装句：neither/nor+助动词/be/情态动词+主语，表示“…也不”，句意是：乔会参加会议吗？--如果他妻子不去，他也不去。而且时态是一般将来时。选D。
口算心算速算应用题系列答案
同步拓展阅读系列答案Batteries can power anything from small sensors to large systems．While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves．University of Missouri（MU） researchers are developing a nuclear energy source that is smaller, lighter and more efficient．
“To provide enough power, we need certain methods with high energy density（密度）”，said Jae Kwon, assistant professor of electrical and computer engineering at MU．“The radioisotope（放射性同位素） battery can provide power density that is much higher than chemical batteries．”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems （M/NEMS）．Although nuclear batteries can cause concerns, Kwon said they are safe．
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems．”
His new idea is not only in the battery’s size, but also in its semiconductor（半导体）．Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor．
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure（晶体结构） of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem．”
Together with J．David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery．In the future, they hope to increase the battery’s power, shrink its size and try with various other materials．Kwon said that battery could be thinner than the thickness of human hair．
【小题1】Jae Kwon gave examples in Paragraph 4_________．
| A．to show chemical batteries are widely applied． |
| B．to introduce nuclear batteries can be safely used． |
| C．to describe a nuclear-powered system． |
| D．to introduce various energy sources． |
| A．uses a solid semiconductor | B．will soon replace the present ones． |
| C．could be extremely thin | D．has passed the final test． |
| A．science news report | B．book review |
| C．newspaper ad | D．science fiction |
Since the beginning of history, man has been attracted by the idea of living forever, of winning the fight against death and disease. So far, this has only remained a dream. Many people have wondered whether it would be possible to find a way to preserve human bodies, and what would be the best way.
It has long been known that meat of fruit can be kept fresh for long periods by freezing; in ancient China, for example, food was stored with ice to keep it fresh. This method could also be useful for preserving humans.
However, most living beings that exist under warm conditions die when frozen. This is because of the harmful effects of freezing ice crystals(晶体), which not only are larger than the volume(体积) of the water originally in the cells, but also form sharp cutting shapes that harm the cells.
In the 1940s Dr B.J. Luyet and a group of scientists in England were working on the problem of freezing cells without damaging them. Since the harm caused by ice crystals was the main cause of damage, Luyet suggested removing some or all of the water from the cells before freezing them.
Using living cells form chicken, Luyet and his assistants discovered that they could partly dry the chicken cells, using a mixture of the white part of an egg and glycerin (丙三醇). Some success was obtained. The chicken cells were dried, frozen for a period of time, and then carefully unfrozen. Almost all the cells recovered when they reached normal temperatures.
Since then, the cooling of whole animals to a temperature far below freezing point for later unfreezing has become more of a possibility, and the glycerin method would probably be used to accomplish this. When this can be done completely and successfully, science will have moved much closer to its aim of freezing and storing incurable patients until the day they can be cured.
【小题1】What does the passage mainly talk about?
| A．Easy but practical ways to remove water from living cells. |
| B．The possibility of preserving human bodies by freezing. |
| C．The practice of preserving food by freezing. |
| D．The harmful effects of freezing. |
| A．has already been realized |
| B．was invented in ancient China |
| C．has its roots in the way of storing food |
| D．is widely accepted by the scientific world |
| A．is harmful to living cells |
| B．is the best way of preserving food |
| C．reduces the volume of water in living cells |
| D．is a way of removing water from living cells |
| A．It is impossible to have whole animals frozen. |
| B．It remains unknown how to unfreeze frozen animals. |
| C．Freezing incurable patients for later treatment is still an idea. |
| D．The glycerin method has already been adopted to treat patients. |